Extensive information about uploaded files

If no value for name is provided, then this
method will return an array containing all available information
about the uploaded file. Otherwise the information identified by
the value of this parameter will be returned as a string.

The list of possible values is determined by the contents of the
$_FILES array, but is customized for the purposes
of HTTP_Upload. Here are the possible properties:

'name': destination file name

'tmp_name': temporary uploaded file name (assigned by PHP)

'form_name': name of the HTML form that submitted the uploaded file

'type': Mime type of the file

'size': size of the file

'error': if there was an error on upload, this contains a string
representing the kind of error. The errorCode() method can be used
to retrieve a localized error message from this property.